science

Translucent concrete

Translucent concrete is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Translucent concrete rather than just read about it. In short: Translucent concrete (also: light-transmitting concrete) is a concrete based building material with light-transmissive properties due to embedded light optical elements — usually optical fibers. Light is conducted through the stone from one end to the other.

Key takeaways

Translucent concrete belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Translucent concrete to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Translucent concrete from memory before moving on to harder problems.

Reference excerpt

Translucent concrete (also: light-transmitting concrete) is a concrete based building material with light-transmissive properties due to embedded light optical elements — usually optical fibers. Light is conducted through the stone from one end to the other. Therefore, the fibers have to go through the whole object. This results in a certain light pattern on the other surface, depending on the fiber structure. Shadows cast onto one side appear as silhouettes through the material. Translucent concrete is used in fine architecture as a façade material and for the cladding of interior walls. Light-transmitting concrete has also been applied to various design products. Several ways of producing translucent concrete exist. All are based on a fine grain concrete (ca. 95%) and only 5% light conducting elements that are added during the casting process. After setting, the concrete is cut to plates or stones with standard machinery for cutting stone materials. Due to bends in the fibers and roughnesses on the cut surfaces of the fibers, light transmission is generally a bit less than half the incident light on the fibers, so given five percent fibers, about two percent. As the human eye's response to light is non-linear, this can still give useful daylighting. In theory, the fibers could carry light around corners and over a distance of tens of meters, with the rate of loss increasing with length depending on the type of fiber and how it is bent. Working with natural light, it has to be ensured that enough light is available. Wall mounting systems need to be equipped with some form of lighting, designed to achieve uniform illumination on the full plate surface. Usually mounting systems similar to natural stone panels are used — e.g., LUCEM uses perforated mounting with visible screws, undercut anchors with agraffes or façade anchors.

History Translucent concrete has been first mentioned in a 1935 Canadian patent. But since the development of optical glass fibres and polymer based optical fibers the rate of inventions and developments in this field has drastically increased. There have also been inventions that apply this concept to more technical applications like fissure detection. In the early 1990s forms like translucent concrete products popular today with fine & layered patterns were developed. Today several companies produce translucent concrete with very different production systems. Some manufacturers are:

Florak Bauunternehmung GmbH, Heinsberg/Germany LBM EFO, Berching/Germany LiTraCon Bt, Csongrád/Hungary LUCEM GmbH, Aachen/Germany Luccon Lichtbeton GmbH, Klaus/Austria LiCrete, by Gravelli/Czech Republic

Variants Apart from fine fiber patterns due to the use of optical fibers or textiles some products with much coarser light pattern are available. The main advantage of these products is that on large scale objects the texture is still visible — while the texture of finer translucent concrete becomes indistinct at distance. Further pictograms and lettering can be realized with this technology. An approach that does not use waveguides involves using transparent aggregate and binders. However, chemically this would not necessarily resemble concrete, and might resemble fiberglass. Unlike materials requiring alignment of optical fibers, however, it might be transported and poured using existing infrastructure.

See also Bottle wall (larger-scale translucent elements) Glass brick (larger-scale translucent elements, minimal concrete grout) LiTraCon (brand of fiberoptic concrete) Daylighting

References

Illustrations

Worked examples

Example 1 — a first encounter with Translucent concrete

Start with the simplest possible case. Write down what Translucent concrete claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Translucent concrete before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Translucent concrete ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Translucent concrete

In research: Translucent concrete appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Translucent concrete in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Translucent concrete is common in secondary-school and first-year university syllabi. It links to neighbouring topics Concrete, so understanding it makes those chapters shorter.
In everyday life: Look for Translucent concrete outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Translucent concrete in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Translucent concrete means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Translucent concrete out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Translucent concrete in simple terms?

Why does Translucent concrete matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Translucent concrete?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Translucent concrete.